225To do… Use the command… RemarksConfigure the maximum number of BGProutes for load balancing balance numberOptionalLoad balancing is notenabled by default.Forbiding session establishment with a peer or peer groupFollow these steps to forbid session establishment with a peer or peer group:To do… Use the command… RemarksEnter system view system-view —Enter BGP view bgp as-number —Forbid session establishment with a peeror peer grouppeer { group-name | ip-address }ignoreOptionalNot forbidden by defaultConfiguring a large scale BGP networkIn a large-scale BGP network, configuration and maintenance become difficult because of the largenumbers of BGP peers. To facilitate configuration, you can configure peer group, community, routereflector, or confederation as needed.Configuration prerequisitesPeering nodes are accessible to each other at the network layer.Configuring BGP peer groupsA peer group is a group of peers with the same route selection policy.In a large-scale network, many peers may use the same route selection policy. You can configure a peergroup and add these peers into this group. In this way, peers can share the same policy as the peergroup. When the policy of the group is modified, the modification also applies to peers in it, simplifyingconfiguration.A peer group is an iBGP peer group if peers in it belong to the same AS, and is an eBGP peer group ifpeers in it belong to different ASs.If a peer group has peers added, you cannot remove its AS number using the undo form of the commandor change its AS number.Configure an iBGP peer groupAfter you create an iBGP peer group and then add a peer into it, the system creates the peer in BGP viewand specifies the local AS number for the peer.Follow these steps to configure an iBGP peer group:To do… Use the command… RemarksEnter system view system-view —
